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1 // Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // concrete file finders for MIME type recognizers |
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15 // |
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16 // |
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17 |
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18 #include "APMFNDR.H" |
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19 |
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20 #include <e32uid.h> |
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21 #include "APMPAN.H" |
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22 |
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23 #ifdef USING_ECOM_RECOGS |
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24 #include <ecom/ecom.h> |
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25 #endif |
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26 |
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27 const TInt KRecognizerDllGranularity=2; |
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28 |
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29 #ifdef USING_ECOM_RECOGS |
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30 const TUid KUidDataRecogInterFaceUid = {0x101F7D87}; |
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31 #endif |
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32 |
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33 // |
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34 // class TRecognizer |
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35 // |
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36 |
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37 CApaScanningDataRecognizer::TRecognizer::TRecognizer(HBufC* aName) |
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38 { |
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39 iName=aName; |
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40 } |
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41 |
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42 // |
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43 // class CApaRecognizerDll |
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44 // |
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45 |
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46 CApaRecognizerDll::~CApaRecognizerDll() |
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47 { |
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48 delete iId.iName; |
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49 iLibrary.Close(); |
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50 delete iNext; |
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51 } |
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52 |
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53 CApaRecognizerDll::CApaRecognizerDll(HBufC* aName) |
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54 : iId(aName) |
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55 { |
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56 } |
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57 |
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58 #ifdef USING_ECOM_RECOGS |
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59 // Used for cleanup support of locally declared arrays |
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60 void CleanUpEComInfoArray(TAny* aInfoArray) |
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61 { |
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62 RImplInfoPtrArray* infoArray = (static_cast<RImplInfoPtrArray*>(aInfoArray)); |
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63 infoArray->ResetAndDestroy(); |
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64 infoArray->Close(); |
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65 } |
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66 #endif |
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67 |
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68 // class CApaBackupOperationObserver |
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69 CApaScanningDataRecognizer::CApaBackupOperationObserver::CApaBackupOperationObserver(CApaScanningDataRecognizer& aRecognizer) |
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70 : iRecognizer(aRecognizer) |
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71 { |
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72 TRAP_IGNORE(iSession = CBaBackupSessionWrapper::NewL()); |
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73 } |
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74 |
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75 CApaScanningDataRecognizer::CApaBackupOperationObserver::~CApaBackupOperationObserver() |
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76 { |
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77 if( iSession ) |
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78 { |
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79 iSession->DeRegisterBackupOperationObserver(*this); |
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80 delete iSession; |
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81 } |
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82 } |
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83 |
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84 void CApaScanningDataRecognizer::CApaBackupOperationObserver::RegisterObserverL() |
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85 { |
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86 if(iSession) |
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87 { |
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88 iSession->RegisterBackupOperationObserverL(*this); |
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89 } |
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90 } |
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91 |
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92 void CApaScanningDataRecognizer::CApaBackupOperationObserver::HandleBackupOperationEventL(const TBackupOperationAttributes& aBackupOperationAttributes) |
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93 { |
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94 if (!iRecognizer.iExtra->iRecognizersLoaded) |
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95 { |
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96 // Then the recognizers have been unloaded, so there's nothing to do |
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97 return; |
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98 } |
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99 |
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100 if ((aBackupOperationAttributes.iFileFlag == MBackupObserver::EReleaseLockReadOnly || |
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101 aBackupOperationAttributes.iFileFlag == MBackupObserver::EReleaseLockNoAccess) |
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102 && aBackupOperationAttributes.iOperation == EStart) |
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103 { |
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104 // release recognisers not in rom |
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105 TInt count = iRecognizer.RecognizerCount(); |
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106 for (TInt i=count-1; i>=0; i--) |
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107 { |
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108 CApaRecognizerDll* lib=iRecognizer.iRecognizerLib[i]; |
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109 TDriveUnit drive(lib->iId.iDrive); |
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110 TChar driveName=drive.Name()[0]; |
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111 if(driveName != TChar('Z')) |
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112 { |
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113 iRecognizer.RemoveRecognizer(lib); // ignore any errors |
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114 } |
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115 } |
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116 } |
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117 |
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118 if (aBackupOperationAttributes.iFileFlag == MBackupObserver::ETakeLock && |
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119 (aBackupOperationAttributes.iOperation == EEnd || |
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120 aBackupOperationAttributes.iOperation == EAbort)) |
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121 { |
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122 iRecognizer.ScanForRecognizersL(); |
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123 } |
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124 } |
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125 |
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126 TInt CApaScanningDataRecognizer::CApaBackupOperationObserver::UpdateCounter() const |
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127 { |
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128 return iUpdateCounter; |
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129 } |
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130 |
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131 void CApaScanningDataRecognizer::CApaBackupOperationObserver::SetUpdateCounter(TInt aValue) |
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132 { |
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133 iUpdateCounter = aValue; |
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134 } |
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135 |
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136 |
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137 // |
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138 // class CApaScanningDataRecognizer |
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139 // |
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140 |
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141 EXPORT_C CApaScanningDataRecognizer* CApaScanningDataRecognizer::NewL(RFs& aFs) |
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142 { |
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143 return NewL(aFs,ETrue); |
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144 } |
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145 |
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146 /** |
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147 @internalTechnology |
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148 */ |
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149 EXPORT_C CApaScanningDataRecognizer* CApaScanningDataRecognizer::NewL(RFs& aFs, TBool aLoadDataRecognizers) |
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150 { |
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151 CApaScanningDataRecognizer* self=new(ELeave) CApaScanningDataRecognizer(aFs); |
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152 CleanupStack::PushL(self); |
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153 self->ConstructL(aLoadDataRecognizers); |
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154 CleanupStack::Pop(); // self |
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155 return self; |
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156 } |
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157 |
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158 EXPORT_C CApaScanningDataRecognizer::~CApaScanningDataRecognizer() |
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159 { |
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160 UnloadRecognizers(); |
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161 delete iExtra->iObserver; |
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162 delete iExtra; |
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163 } |
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164 |
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165 EXPORT_C void CApaScanningDataRecognizer::ScanForRecognizersL() |
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166 { |
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167 // set all recognizers to not present - pending rediscovery |
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168 TInt count=iRecognizerLib.Count(); |
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169 TInt i; |
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170 for (i=0; i<count; i++) |
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171 iRecognizerLib[i]->iPresent=CApaRecognizerDll::ENotPresent; |
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172 |
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173 ScanForEcomRecognizersL(); |
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174 // |
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175 // remove any recognizers that are no longer present |
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176 for (TInt ii=iRecognizerLib.Count()-1;ii>=0;ii--) |
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177 { |
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178 CApaRecognizerDll* lib=iRecognizerLib[ii]; |
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179 if (lib->iPresent==CApaRecognizerDll::ENotPresent) |
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180 { |
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181 RemoveRecognizer(lib); // ignore any errors |
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182 } |
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183 } |
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184 iMaxBufferSize = -1; // Recognizers were re-loaded so need to recalculate the maximum buffer size |
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185 } |
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186 |
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187 EXPORT_C TInt CApaScanningDataRecognizer::RecognizerCount() |
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188 { |
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189 return iRecognizerLib.Count(); |
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190 } |
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191 |
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192 EXPORT_C CApaScanningDataRecognizer::CRecognizerArray* CApaScanningDataRecognizer::RecognizerListLC()const |
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193 { |
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194 CRecognizerArray* list=new(ELeave) CArrayFixFlat<TRecognizer>(2); |
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195 CleanupStack::PushL(list); |
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196 TInt count=iRecognizerLib.Count(); |
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197 for (TInt i=0; i<count; i++) |
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198 list->AppendL(iRecognizerLib[i]->iId); |
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199 return list; |
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200 } |
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201 |
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202 EXPORT_C const CApaScanningDataRecognizer::TRecognizer& CApaScanningDataRecognizer::operator[](TInt aIndex)const |
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203 { |
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204 return iRecognizerLib[aIndex]->iId; |
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205 } |
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206 |
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207 EXPORT_C TInt CApaScanningDataRecognizer::UpdateCounter()const |
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208 { |
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209 return iExtra->iObserver->UpdateCounter(); |
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210 } |
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211 |
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212 |
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213 EXPORT_C CApaScanningDataRecognizer::CApaScanningDataRecognizer(RFs& aFs) |
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214 :CApaDataRecognizer(aFs), |
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215 iRecognizerLib(KRecognizerDllGranularity) |
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216 { |
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217 __DECLARE_NAME(_S("CApaScanningDataRecognizer")); |
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218 } |
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219 |
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220 EXPORT_C void CApaScanningDataRecognizer::ConstructL() |
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221 { |
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222 ConstructL(ETrue); |
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223 } |
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224 |
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225 void CApaScanningDataRecognizer::ConstructL(TBool aLoadDataRecognizers) |
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226 { |
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227 iExtra = new (ELeave) CApaScanningDataRecognizerExtra(); |
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228 iExtra->iObserver = new (ELeave) CApaBackupOperationObserver( *this ); |
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229 iExtra->iObserver->RegisterObserverL(); |
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230 if(aLoadDataRecognizers) |
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231 { |
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232 LoadRecognizersL(); |
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233 } |
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234 } |
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235 |
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236 EXPORT_C void CApaScanningDataRecognizer::SetEcomRecognizersFromListL(const CRecognizerArray& aList) |
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237 { |
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238 //for ecom style |
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239 for (TInt i=0 ; i<aList.Count() ; i++) |
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240 { |
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241 TDriveUnit drive(aList[i].iDrive); |
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242 TRAPD(ret, LoadEcomRecognizerL(drive,aList[i].iUid)); |
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243 if (ret==KErrNoMemory) |
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244 { |
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245 User::Leave(ret); |
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246 } |
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247 } |
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248 } |
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249 |
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250 EXPORT_C void CApaScanningDataRecognizer::SetEcomRecognizerL(const TRecognizer& aRecognizer) |
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251 { |
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252 //for ecom style |
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253 TDriveUnit drive(aRecognizer.iDrive); |
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254 LoadEcomRecognizerL(drive,aRecognizer.iUid); |
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255 } |
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256 |
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257 TInt CApaScanningDataRecognizer::RemoveRecognizer(CApaRecognizerDll* aDll) |
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258 { |
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259 __ASSERT_DEBUG(iRecognizerLib.Count()>0,User::Invariant()); |
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260 // try to remove the recognizer from the list |
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261 TInt ret=RemoveDataRecognizerType(aDll->iRec); |
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262 if (ret!=KErrNone && ret!=KErrNotFound) |
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263 return ret; |
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264 // |
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265 // get a handle to the previous entry in the list |
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266 TInt count=iRecognizerLib.Count(); |
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267 TInt i; |
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268 for (i=0; i<count; i++) |
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269 { |
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270 if (iRecognizerLib[i]==aDll) |
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271 break; |
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272 } |
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273 __ASSERT_ALWAYS(i<count,Panic(EPanicLibraryNotInList)); |
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274 |
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275 // remove the dll |
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276 delete iRecognizerLib[i]; |
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277 iRecognizerLib.Remove(i); |
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278 iRecognizerLib.Compress(); |
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279 if(iExtra->iObserver) |
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280 iExtra->iObserver->SetUpdateCounter(iExtra->iObserver->UpdateCounter() +1); |
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281 return KErrNone; |
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282 } |
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283 |
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284 #ifdef USING_ECOM_RECOGS |
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285 |
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286 //load the ecom style data recognizer |
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287 void CApaScanningDataRecognizer::LoadEcomRecognizerL(TDriveUnit& aDrive,TUid aUid) |
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288 { |
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289 //Get implementation information of the recognizer with UID aUid |
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290 RImplInfoPtrArray implementationInfoArray; |
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291 TCleanupItem cleanup(CleanUpEComInfoArray, &implementationInfoArray); |
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292 CleanupStack::PushL(cleanup); |
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293 REComSession::ListImplementationsL(KUidDataRecogInterFaceUid,implementationInfoArray); |
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294 const TInt availCount = implementationInfoArray.Count(); |
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295 CImplementationInformation* info=NULL; |
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296 TInt ii; |
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297 for (ii=0;ii<availCount;++ii) |
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298 { |
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299 info = implementationInfoArray[ii]; |
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300 TUid uid = info->ImplementationUid(); |
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301 |
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302 if(uid.iUid == aUid.iUid ) |
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303 { |
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304 break; |
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305 } |
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306 } |
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307 |
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308 //If the implementation not found just return |
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309 if(ii==availCount) |
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310 { |
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311 CleanupStack::PopAndDestroy(&implementationInfoArray); |
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312 return; |
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313 } |
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314 |
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315 //Get the version of implementation |
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316 TInt version=info->Version(); |
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317 |
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318 // check we haven't loaded this one already |
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319 TInt count=iRecognizerLib.Count(); |
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320 TInt i; |
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321 CApaRecognizerDll* lib=NULL; // the previous one in the list |
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322 for (i=0; i<count; i++) |
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323 { |
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324 lib=iRecognizerLib[i]; |
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325 if (lib->iId.iUid==aUid) |
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326 {// we may have to override one |
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327 if (lib->iPresent!=CApaRecognizerDll::ENotPresent) |
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328 { |
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329 CleanupStack::PopAndDestroy(&implementationInfoArray); |
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330 return; // already found |
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331 } |
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332 else |
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333 { |
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334 if (lib->iVersion < version) |
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335 { |
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336 //Upgrade a plugin if a plugin with higher version than loaded plugin is installed. |
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337 lib->iPresent = CApaRecognizerDll::ESuperseded; |
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338 break; |
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339 } |
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340 else |
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341 { |
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342 CleanupStack::PopAndDestroy(&implementationInfoArray); |
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343 lib->iPresent = CApaRecognizerDll::EIsPresent; |
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344 return; |
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345 } |
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346 } |
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347 } |
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348 } |
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349 //Remove the old version and let it continue to load new version |
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350 if ((i<count)&&(lib->iPresent==CApaRecognizerDll::ESuperseded)) |
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351 { |
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352 RemoveRecognizer(lib); |
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353 } |
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354 |
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355 // load the library |
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356 HBufC* recogName=info->DisplayName().AllocL(); |
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357 CleanupStack::PushL(recogName); |
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358 lib=NULL; |
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359 lib = new(ELeave) CApaRecognizerDll(recogName); |
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360 CleanupStack::Pop(recogName); |
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361 CleanupStack::PushL(lib); |
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362 TRAPD(error,lib->iRec = CApaDataRecognizerType::CreateDataRecognizerL(aUid)); |
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363 if(!error && lib->iRec) |
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364 { |
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365 lib->iPresent = CApaRecognizerDll::EIsPresent; |
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366 AddDataRecognizerTypeL(lib->iRec); |
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367 lib->iId.iUid = aUid; |
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368 lib->iId.iDrive = aDrive; |
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369 lib->iVersion=version; |
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370 iExtra->iObserver->SetUpdateCounter(iExtra->iObserver->UpdateCounter() + 1); |
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371 // |
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372 // add lib to the library list |
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373 iRecognizerLib.AppendL(lib); |
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374 CleanupStack::Pop(lib); // lib |
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375 } |
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376 else |
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377 { |
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378 CleanupStack::PopAndDestroy(lib); // lib |
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379 } |
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380 CleanupStack::PopAndDestroy(&implementationInfoArray); |
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381 } |
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382 #else |
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383 void CApaScanningDataRecognizer::LoadEcomRecognizerL(TDriveUnit&,TUid) |
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384 { |
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385 } |
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386 #endif |
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387 |
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388 void CApaScanningDataRecognizer::ScanForEcomRecognizersL() |
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389 { |
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390 #ifdef USING_ECOM_RECOGS |
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391 //scan ecom plugin |
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392 RImplInfoPtrArray implementationArray; |
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393 TCleanupItem cleanup(CleanUpEComInfoArray, &implementationArray); |
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394 CleanupStack::PushL(cleanup); |
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395 REComSession::ListImplementationsL(KUidDataRecogInterFaceUid,implementationArray); |
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396 const TInt availCount = implementationArray.Count(); |
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397 for (TInt count=0;count<availCount;++count) |
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398 { |
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399 const CImplementationInformation* info = implementationArray[count]; |
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400 TUid uid = info->ImplementationUid(); |
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401 TDriveUnit drive=info-> Drive(); |
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402 TRAP_IGNORE(LoadEcomRecognizerL(drive,uid)); |
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403 } |
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404 CleanupStack::PopAndDestroy(&implementationArray); |
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405 #endif |
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406 } |
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407 |
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408 /** |
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409 @internalTechnology |
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410 */ |
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411 EXPORT_C void CApaScanningDataRecognizer::LoadRecognizersL() |
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412 { |
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413 iExtra->iRecognizersLoaded = ETrue; |
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414 ScanForRecognizersL(); |
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415 UpdateDataTypesL(); |
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416 } |
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417 |
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418 /** |
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419 @internalTechnology |
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420 */ |
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421 EXPORT_C void CApaScanningDataRecognizer::UnloadRecognizers() |
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422 { |
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423 iExtra->iRecognizersLoaded = EFalse; |
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424 DestroyRecognizerList(); |
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425 iRecognizerLib.ResetAndDestroy(); |
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426 } |
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427 |